Solderless-can-seam-packing composition.



B. H. KANNENBERG.' SOLDERLESS CAN SEAM PACKING COMPOSITION.

APPLICATION FILED NOV 12, 1906.

1,006,098., I V Patented OOt. 17,1911.

' ment or storage of the cans prior to fill UNITED STATES PATENT OFFICE.

nannwm n. nmrnnanne, or can max, rumors, nssrcnoa ro mnarcau'cm comm, or NEW roax, n. 2., a conroanrron or new masar'.

SOLDEBLESS-GAN-SEAH-PACKING COHPOSITIONZ- To all whom it may concern:

Be it known that I, BALDWIN BERG, a citizen of the United States, residing in Oak Park, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Solderless-Oan- Seam-Packmg Compositions, of which the following is a specification.

My invention relates to double seam cans or other cans having folded or solderless seams, and more particularly to packing composition for such seams of cans.

' he object of my invention is to provide a seam packing for double seam or other cans which may be applied to the seaming flange of the can cover or can body at the time the cans are manufactured, and which will permanently adhere in place without "danger of bein displaced or rubbed off in handling and s ipment, and will not become brittle or deteriorate during handling, shipmg and closing, and by means of which hermetically'tight seams can be produced with certainty and reliability.

My invention consists,'in connection with the can body, can cover and their seaming flanges, of an adhesive packing composition applied to the seaming flange of one of the parts, preferably the cover, and consisting of caoutchouc or Para rubber one part, benzin, naphtha, or like rubber solvent ten parts and zinc oxid, commerciallyelmown as zinc white, one part, the parts ing by weight and being thoroughly mixed and dissolved together. This packing composition when ready for application to theseaming flange of the cove'r,is in a liquid sticky, adhesive or tacky form, and when applied in a thin coating to the seaming flange will quickly dry and form a firm, strong, elastic compact homogenebus body in the form of a thin H. KANNEN-.

Specification of Letters Patent. Patented Oct, 1911, Application filed November 12, 1906. Serial m. $43,139.

continuous film or packing, not liable .to become severed or have its continuity broken at-any point, and which will adhere firml in placeon the-seaming flange and-whic when embraced between the folds of the seam, will form a secure and hermetically tight joint or seam, and which, at the same the cod contents of the can.

In the accom anying drawing, which formsa part of specification, Figure 1 is a central vertical section of a preserving can having a body A provided with a seaming flange a, and cover B having a seaming flange bprovided with a thin coatin or film of my packing composition O on t e outer portion of the seaming flange, the two seaming flanges bein interposed together into a hermetically tig t seam,the"same being preferably what is known as a double seam. Fig. 2 is a reverse plan view of the cover showing the acking composition applied" to its seaming an e. on line 3-3 of ig. 2.

p The packing or coating G is preferably applied to the outer or peri heral half or portion only of the seaming ang I claim: f A can cover provided with a seaming flange having a thin, continuous, stron in coating thereon,-consisting of rub r, a ru ber solvent and zinc oxid 1n the proportions substantially asset forth, said coating being on the peripheral portion only of said seaming flange, and firmly adhering to the tin coated surface ofsaid seaming flange,

substantiall as s ecified.

BAL WI H. KANNENBERG.

Witnesses: I

H. M. Mmmar,

Pam ABRAMS.

time 1s free from any injurious action upon Fig. 3 is a detail section e b. a

hard, firm, elastic and nnocuous seam ac 

